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A car covers 1/5 of the distance from A to B at the speed at 8 km/hr, 1/10 of the distance at 25 km per hour and the remaining at the speed of 20 km per hour. Find the average speed of the whole journey.
एक कार A से B तक की दूरी का 1/5 भाग 8 किमी./घंटा की गति से चलती है, 1/10 भाग 25 किमी./घंटा की गति से चलती है ओर शेष 20 किमी/घंटा की गति से चलती, है। पूरी यात्रा की औसत गति ज्ञात कीजिए।

A

A)12.625 km/hr

B

B)13.625 km/hr

C

C)14.625 km/hr

D

D)15.625 km/hr

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CHAMPION PUBLICATION-2011 TIER-II PAPER(23)-EXERCISE
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  9. Nitin bought some oranges at Rs.40 a dozen and an equal number at Rs.3...

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